That player would be Baltimore Orioles first baseman and corner outfielder Trey Mancini. Mancini, 27, may be a name that you are not very familiar with since he plays with the Orioles but in 2019, he had an excellent season for the hapless Orioles.
In 154 games (602 ABs), he hit .291/.364/.535 with 35 home runs, 97 RBI, 38 doubles, 106 runs, and an OPS+ of 135. 2019 was his third full season in the major leagues so, if the Rockies were to acquire him, they would have three years of team control before he would become a free agent.